An efficient semi-automated optimisation approach for (grid-stiffened) composite structures: Application to Ariane 6 Interstage

Maes, Vincent K.; Павлов, Леонид Николаевич; Simonian, Sahak M.

doi:10.1016/j.compstruct.2016.02.082

Cited by 29 publications

(4 citation statements)

References 12 publications

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“…Wu et al [18] provided a novel strengthening method of LS and presented a pyramidal LS with some mechanical performance advantages. Other optimization approaches for LS included semi-automated optimization approach [19] and inverse identification approach [20], which greatly improved the mechanical performances of LS. These studies almost focus on mechanical optimization with single objective for LS.…”

Section: Of 23mentioning

confidence: 99%

Optimization Design of Lattice Structures in Internal Cooling Channel of Turbine Blade

Shen

Ruan

et al. 2021

Applied Sciences

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Recently, the inlet temperatures in gas turbine units have been drastically increased, which extremely affects the lifespan of gas turbine blades. Traditional cooling structures greatly improve the high temperature resistance of the blade; however, these structures scarcely concern both heat transfer and mechanical performances. Lattice structure (LS) can realize these requirements because of its characteristics of light weight, high strength, and porosity. Although the topology of LS is complex, it can be manufactured with the 3D metal printing technology. In this study, an integral optimization method of lattice cooling structure, used at the trailing edge of turbine blades, concerned with heat transfer and mechanical performance, was presented. Firstly, functions between the first-order natural frequency (freq1), elasticity modulus (E), relative density (ρ¯), and Nusselt number (Nu), and the geometric variables of pyramid type LS (PLS) and X-type LS (XLS) were established, and the reliability of these functions was verified. Then, a mathematical optimization model was developed based on these functions which contained two selected optimization problems. Finally, relations among objectives were analyzed; influence law of geometric variables to objectives were discussed, and the accuracy of the optimal LS was proved by experiment and numerical simulation. The optimization results suggest that, compared to the initial LS, Nu increases by 24.1% and ρ¯ decreases by 31% in the optimal LS of the first selected problem, and the Nu increases by 28.8% while freq1 and ρ¯ are almost unchanged in the optimal LS of the second selected problem compared to the initial LS. This study may provide a guidance for functions integration design of lattice cooling structures used at turbine blades based on 3D printing.

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Section: Of 23mentioning

confidence: 99%

Optimization Design of Lattice Structures in Internal Cooling Channel of Turbine Blade

Shen

Ruan

et al. 2021

Applied Sciences

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“…With the increasing application of composites, automatic fiber placement (AFP) and its optimization have become the focus of advanced manufacturing and material optimization [1][2][3][4][5][6]. Material optimization is mainly related to the geometric contour of the laminate, the material distribution, the fiber placement path, and the ply stacking sequence [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Continuously Fiber Path Optimization Based on Gaussian Distribution Function with Convergent Material Orientation

Zhang,

Lu,

Hua

et al. 2024

Preprint

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How to optimize the fiber placementpath is of great significance for improving the mechanical properties of composite material. Fiber orientation discretization is regarded as a common means to solve the above problem, and themethod with multivariate is generally adopted to find the optimal fiber angle. However, the cost is high, and eventually there are still multiple discrete angles as the result, which cannot meet the ultimate requirements of fiber orientation convergence and path continuity. Therefore, an optimization method of fiber placement path based on Gaussian distribution function is proposed, where only one variable is used to select the optimized angle among any number of discrete placement angles. By adjusting several parameters in the Gaussian distribution function, the fiber orientation is converged, and the path continuity is realized by the spatial filtering. New method can be used to avoid the multiple local minima problem found in fiber orientation discretization process. Numerical experiments are carried out to optimize the fiber placement path of aerofoil skin and rocket interstagesection skin respectively, which shows the efficiency of the proposed method.

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“…R. Fangueiro et al successfully used the RTM process to prepare three-way pipes [ 12 ], but the RTM equipment cost is too high. Compared with RTM, fiber winding with advantages of low cost and high efficiency is more suitable for producing tee pipes with good mechanical properties [ 13 , 14 , 15 ]. Moreover, as the industrial robot develops, robotic filament winding technology with high degrees of freedom is applied to manufacture complex shape parts [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

A Non-Geodesic Trajectory Design Method and Its Post-Processing for Robotic Filament Winding of Composite Tee Pipes

Cheng

Han

et al. 2021

Materials

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With the advantages of high specific strength and well corrosion resistance, polymer-matrix composite tee pipes are widely used in aerospace and civilian fields. The robotic filament winding technology is suitable for forming complex shape parts. This paper aims to provide a novel non-geodesic trajectory design method to get a continuous trajectory for tee pipe winding. Furthermore, post-processing methods are proposed for realizing the full coverage of tee pipes by robotic filament winding. The CAD/CAM software is then designed to simulate the winding process and realize the cover of the whole tee pipe. Finally, experiments of winding a tee pipe with a desktop winding machine and a six-axis winding robot are carried out. The results show that the tee pipe is fully covered, verifying the accuracy of the design method and post-processing methods.

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An efficient semi-automated optimisation approach for (grid-stiffened) composite structures: Application to Ariane 6 Interstage

Cited by 29 publications

References 12 publications

Optimization Design of Lattice Structures in Internal Cooling Channel of Turbine Blade

Optimization Design of Lattice Structures in Internal Cooling Channel of Turbine Blade

Continuously Fiber Path Optimization Based on Gaussian Distribution Function with Convergent Material Orientation

A Non-Geodesic Trajectory Design Method and Its Post-Processing for Robotic Filament Winding of Composite Tee Pipes

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